The U.S. Military taking no chances with these olympics planning to respond if disaster strike. We have more from Jon Karl. Reporter: That's right. The U.S. Military is preparing contingency plans to move two U.S. Naval warships to the black sea during the olympics. They would be there to help the Russians with emergency security situations and in the worst case scenario of a major terrorist attack they would be there to help evacuate U.S. Athletes out of Russia. U.s. Officials say that no ships have been moved yet. That this is simply prudent planning but, George, make no mistake about it, U.S. Officials are deeply concerned about the terror threat at these games. I know they've been frustr frustrated by -- they've offered to do a lot more security cooperation with the Russians but the Russians say, hey, we've got this. Reporter: The Russians as you saw when you interviewed Vladimir Putin say they will have a ring of steel around these olympic games, but I have to say on this is one shall are, the issue of the terror threat where for all of the tensions between the two, cooperation has genuinely been quite good and U.S. Officials say they are working with the Russians there to assist them should they need it. Jon Karl, thanks very much.

This transcript has been automatically generated and may not be 100% accurate.

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